In affected versions, vulnerability-lookup handled user-controlled content in comments and bundles in an unsafe way…
Summary
Cross-site scripting reported (CVE-2025-42620). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
In affected versions, vulnerability-lookup handled user-controlled
content in comments and bundles in an unsafe way, which could lead to
stored Cross-Site Scripting (XSS).
On the backend, the related_vulnerabilities field of bundles accepted
arbitrary strings without format validation or proper sanitization. On
the frontend, comment and bundle descriptions were converted from
Markdown to HTML and then injected directly into the DOM using string
templates and innerHTML. This combination allowed an attacker who could
create or edit comments or bundles to store crafted HTML/JavaScript
payloads which would later be rendered and executed in the browser of
any user visiting the affected profile page (user.html).
This issue affects Vulnerability-Lookup: before 2.18.0.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2025-42620 has been found.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2025-42620" on the vendor's site.
CVE-2025-42620 — CWE-79
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) has been reported.
Check the vendor advisory for the affected versions.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。